<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
	</body>
	<script>
		// 1. 获取body
		var body = document.body;
		console.log(body);
		// 2. 获取html
		var html = document.documentElement;
		console.log(html);
	</script>
</html>
